Holder for abrasive material



W. LAMB El' AL I HOLDER FOR ABRASIVE MATERIAL Filed May so,- 1945 'f5 a msmx Patented Nov. 4, 1947 UNITED STATES PATENT OFFICE HOLDER FOR ABRASIVE MATERIAL Wade Lamb and Carl W. Hood, Detroit, Mich. Application May 30, 1945, Serial No. 596,624

4 Claims.

Our invention relates to holders for abrasivey material such as sand or emery coated cloth or paper. Such material is used for a wide variety of purposes, but in all of such uses, the abrasive coating eventually becomes worn away, or becomes lled with particles of the material being abraded.

It is an object of our invention to provide a holder from which a strip of such abrasive material may be fed from a roll mounted within the holder, to present unused portions of the strip as the abrasive coating thereon becomes worn away or becomes illed with particles of the material being worked upon, the used portions of the strip being wound upon another roller also mounted within the holder. This feeding-out action of the unused portion of the abrasive strip, and the winding up of the used portion is brought about by turning a knob located on the side of the holder.

Another object of the invention is to provide a holder for abrasive material which has a handle portion at one end, and a tapered projection at the other end over which the abrasive strip is drawn. This produces a device which somewhat resembles a le in shape, and which may be operated by hand in much the same manner as a iile or abrasive stone would be.

A further object is to provide such a holder wherein the roll of unused abrasive strip and the roller upon which the used portions of the strip are wound ar both contained in a housing portion located in the central part of the holder, and this housing portion is so constructed that it may be readily taken apart to permit removal of the roll of used abrasive strip when all of the strip has been consumed, and easy insertion of a new roll of abrasive strip.

The above and other objects of the invention will be more readily understood by referring to the specification and accompanying drawing, in which:

Fig. 1 is a side elevational view of our improved holder for abrasive material, with portions broken away to show some of the interior construction;

Fig. 2 is a sectional view, of Fig. 1; and

Fig. 3 is a view somewhat similar to Fig. 1, Ibut showing a slightly diierent model of abrasive holder embodying the invention.

The reference numeral lll indicates a housing portion having a recess l2 formed therein, which recess is preferably of rectangular shape. I4 is a taken on the line A-A handle portion which is shown as being formed as an integral part of the housing, but it may of course be made as a separate part, if desired, and be secured thereto in any suitable manner. l Ei is a cover which serves to close the open end of the housing, and this cover carries two spaced apart walls I8 and 20, which are of such dimensions that they are adapted to t snugly within the recess I2. Screws 22, or other suitable securing members, extend through holes in the sides of the housing and are threaded into the walls i8 and 20 to hold the cover in position on the hous- 111g.

Extending outwardly from the cover i6 is a projection 24 which is tapered so that it is of reduced thickness at its outer end. Adjacent the point where the projection joins the cover, at one side thereof there is formed an elongated aperture or slot `2li, while at the kother side there is formed another slot 28, both of which extend through the cover and communicate with the interior of the housing when the cover is in place thereon.

Each of the walls i8 and 20 has slots 36 and 22 formed in them, these slots extending inwardly into the walls from the outer ends thereof. Rotatably supported in the slots 28 in the walls i8 and 20 is a roller 34 upon which is carried a roll 36 of abrasive material in the form of a strip 38 which may be of paper or cloth, coated with sand, emery dust, carborundum particles, or any other desired abrasive material. The roll 38 is located in the space between the walls i3 and 2!! which keeps it in proper position on the roller 34. The strip 38 is fed out through the slot 26 and extends over the end of the projection 2li and back on the opposite side thereof and then through the slot 28 where it is secured to another roller fill which is rotatably supported in the slots 32 in the walls I8 and 20.

The roller 34 with the roll 35 mounted upon it and the roller 40 are assembled in position in the slots 30 and 32 in the walls i3 and 2l] While the cover is removed from the housing. Thereafter the cover is placed over the housing so that the walls I8 and 2l) fit into the recess,vthe outer edge of the cover bearing against the edge of the housing to limit such inward movement, and then the screws 22 are placed in yposition to hold the parts in assembled relation.

One end of the roller d projects beyond the wall I8 and is adapted to slide through a slot 42 in the side wall of the housing portion l@ when the cover is being assembled in position on the housing. On this projecting end of the roller 40 is secured a, knob 44. The holder is now ready for use.

It may be used in substantially the same manner and for the same purposes as a file or abrasive stone would be used, to smooth or abrade away portions of Wood, metal or any other material, the portion of the strip 38 on either side of the projectionsd 24 being. available for this purpose. When as aresultl ofr such use, the abrasive' coating becomes worn away or lled with particles of the material being worked upon, so that it is no longer useful, the knob 44 is turned in a direction which will cause the strip 38E to` unwind from the roller 34 and slide around; the endyof the projection 24 and become Wound upon the roller 40, thus presenting an unused section of the abrasivev material.

The rollers 34 and 4i!y are of such diameter that they fit snugly within the slots 3D and 32, which results in their being held rinly in position' therein, so' that they do not rotate until the knob A4 is' turned; This causesl the stripv 38y to be' held tightly in position upon the projection 214". If 'desired, any suitable spring'tension means could be employed tov positively hold. the rollers position inthe slots 30` and 3? until it is desired to move them, but it is not believed that' such means will be necessary;

At the outer end' of the projection 24', there is provided at each side a smallplate 4'6", which is secured to the' projection bya fastener 48. These plates serve as guides to hold the strip of abrasive materialY in proper position laterally' on the projeetion, and also to protect the end of the'abrasive holder fromY damage should it accidentallyv come intov contact with' the ywork or should it be dropped.

WhenA afterY considerableuse, all' of the strip of abrasive material' has-been unwoundfrom the roller 34' andwound upon the' roller 40, the' screws 22 are removed' so that thevh'older can be taken apart, and these rollers and the usedV abrasive strip are removed; and new rollers, one of'which hasv a fresh abrasive strip wound' thereon, are inserted, after which the device is reassembled ready'for further usc Abrasive holders of this type' are useful not only in shops or other placeswhere' files or abrasive stonesv are ordinarily employed, but may also be` used formany' other purposes. such asvby draftsmenI or artists` as sandpaper uponwhich pencils orV crayons may be pointed, or as abrasive sticks for smoothing finger nailsV or forv any other use for which abrasive sticks are ordinarily employed. When used for the latter purposes, the holder would: be made smaller and lighter,v such a;- for-m of holder being show-n inFig. BLWherein the'same reference characters are used to refer to the parts, which are similar in design tothosefshowninligs. 1 and 2. thisform itwill beseenthat the strip 3& is made narrower in proportionl to the length of! the holder, and the handle: portion Iltis made somewhat smaller.

While wei have shown and described specinc forms ofour invention. it will be understood that various changes in size, shape anddetails ot construction maybe made withouty departing. from the spirit andv scope of the appended claims.-

We claim:

1. In a; holder for abrasive material'the combinatienV of a4 housing having an open. end anda handle'portion, a cover for the open end of said housing, a projectionA extending outwardly from the cover, having a. pair of slots extending through the cover on opposite sides of the projection, a strip of abrasive material extending outwardly from the interior of the housing through one of the slots, said strip being supported on said projection and extending over the end thereof and back on the opposite side and thence into the interior of the housing through the other of the slots,v apair of rollers carriedby said cover located within the-housing, the' opposite ends of the strip each being connected to one of said rollers, and means accessible from the exterior of the housing operable to rotate one of said rollers whereby said strip will4 become wound upon that roller to advance an unused portion of said strip into position upon the projection.

2. In a holder for abrasive material, the combination of a housing having an open end and a handlev portion, a cover for the open end of said housing, a flat elongated projection extending outwardly from the cover, having a pair of slots extending through the cover on opposite sides of the projection, a strip of abrasive material extending outwardly from the housing through one ofthe slots, said strip being slidably supported upon the projection and extending over the end thereof and back on the opposite side and thence into the housing through the` other of the slots, and guide means located at each side of the projection and extending therebeyon'd, saidy guide means serving to hold said strip in position laterally on saidprojection.

3. In a holder-for abrasive material, the combination of a housing having anr open end and a handle portion, a cover for the open end of the housing, a flat elongated projection extending outwardly from the cover, said cover being provided with an aperture located at each side of the projection, a roller rotatably supported on the cover inside of the housing, a strip of abrasive material wound upon said roller, the outer end of said strip extending outwardly through one of said apertures and being supported upon' said projection and extending over the end thereof and back on the opposite side and thence into-the housing through the other of said apertures, a second roller rotatably supported onthe cover and having a portion projecting outside of said housing, a knob secured to the outer end of the second roller,.the end of said stripr being connected to saidsecondv roller so that as the latter is rotated. by the knob, the strip will become wound thereupon causing unused portions of said strip to be moved into position upon said projection.

4. In a holder for abrasive material, the combination of a housingA having an open end and a han'dleportion, a cover for the open end of the housing, a flat elongated projection extending outwardly from the cover, saidr cover being providedwith an aperture locatedY at each side of the projection, two spaced wallsV extending from the cover into the housing having slots formed therein, a roller rotatably supported in one ot the slots in each wall, a strip of abrasive material wound upon said roller in the space between said walls, theouter end of the strip extending out through one of said. apertures and being supported upon the projection and extending over the end thereof and back on the opposite side and thence'into the housing through theY other of said apertures, a second roller rotatably supported in the other of said slots in the walls an'dhaving a portion projecting outside of said housing, a knob secured to the-outer end of said second'rollenth'e end of said strip of abrasive material' being connected to the 2,430,060 Y 5 o second roller so that as the latter is rotated by the 4 m knob, the unused portions of the strip will become UNITED STATED PATENTS unwound from the rst mentioned roller and the Number Name Date used portions of the strip will become wound upon 579,850 1111111121111 M91- 30, 1397 said second roller. 5 752,475 Smith Feb. 16, 1904 WADE LAMB. 1,004,435 JODBS Sept. 26, 1911 CARL W. HOOD., 1,253,080 Morreau Jan. 8, 1918 1,566,164 Norton Dec. 15, 1925 REFERENCES CITED 1,763,561 Mulder June 10, 1930 The following references are of record in the 10 1968215 McNa'ught et al July 31 1934 le of this patent: 

